Gramophone.



PATBNTED OUT. 30, 1906.

J; SANDERS. GRAMOPHONE.

APPLICATION FILED AUG.4,1905.

uvcnio'a ialvvrlrwwlllivl H UNITED Sl-ATEQ PATENT OFFICE.

vJOSEPH SANDERS, OF WASHINGTON, DISTRICT F COLUMBIA. GRAMOPHONE.

No. 834,326. s ecification of Letters Patent.

' Patented Oct. so, 1909/ Application tiled August 4,1906. Serial No.272,787.

zen of the United States, and a resident of Washington, in the Districtof Columbia, have invented certain new and useful Im provements .inGramophones, of which the oliowing is a specification.

This invention has reference to. improvements in gramophones of the typewherein a tapering amplifying horn or a section thereof is mounted toswingjover a record-tablet only i Is in a plane parallel carried 'bysaid tapering horn or horn-section a d have freedom of movement in-aplane at riggt angles to the plane of movement of the 1 horn.

The invention consists in providing. a quadrantal ,neck .for thesound-box, which neck is, pivotally yoked to the ta er section, so as tomove in a curved pat past the smaller or free end of said hom-section tobring the stylus of the sound-box in en agement with a sound-recordgroove or to ring the sound-box over onto the horn-section in ositionfor the insertion or removal of a styus. To insure asound-proof jointbetween the quadrantal neck or sound-box carrier and the taperinghorn-section, the meeting faces are curved on an arc the center of whichis the pivot of the yoke joining the sound-box carrier to thehorn-section. All this will a pear from the following detaildescription, in which reference is made to the accom anying drawings,forming-part of this speci cation, and in which Figure 1 is a sideelevation of a portion of a taper horn-section and'the quadrantal'neckor sound-box carrier with .thes'ound-box and a disk record-tablet'shown. in dotted lines. Fig. 2 is a plan view of the structure shown inFig. 1 with the sound-box showninfull lines and. the record-diskomitted. Fig; 3 is a section. on the line no re ofFig. .L, and Fig. '4is aone piece with the horn-section, but whichmay be soldered orlbrazedto it, and it is of larger outer diameter than the adjacent porthereto;and the object of 4 my invention is to produce a means for'mounting'the' sound-box whereby it may be axis of which is coincidentwith that of a bolt or ally through the taper arm a short distance backof its free end. The bore of the taper arm is continued through the head3 and ter minutes-at the curved face 4 in a mouth 6, which flares attopand bottom, as shown in Fig. 4, for a purpose that will presentl appear.7 of any approved type through the intermediary of a uadrantal hollowneck 8.

The neck 8 as one end 9 of such size as to fit into and carry thesound-box, and the other end 10 is ex anded to match insize the head 3.The end lO of the neck 8 is held in juxta osition to the head 3, so thatits face' 11, which is curved on the same are as the face 4 of the saidhead 3, is in sliding contact, or nearly so, with the said face 4. Thisis done by means of two yoke-arms 1212, securely astened at one end tothe end 10 of the neck 8, as by the screws 13, and at the other endjournaled to the taper arm 1 by the boltor pin 5, being ivotallyconfinedbetweenthe heads of said bolt and felt or other non-resonant washers 14interposed between the yoke-and the walls of the ta er arm. Thisconstruction perrr its the ho] ow t iereby) to be swung around the bolt'5 as a pivot through a curved path in a vertical rought into positionto engage a recordgroove, (in which case the en 10 of the neck 8 coversthe free endof the taper arm,) or the neck andsound-box m ay beswungnpward, over, and downward upon the top of the taper arm, as shownin dotted lines, Fig. 1, in which latter osition a worn style may bereadily removed from the sound-box ora new style inserted,

The passage through .the hollow neck 8 may be substantially roundand ofthe same diameter as the lateral diameter of the mouth 'of the taperarm. It therefore "communicates with a part only of the mouth 6 in avertical direction. This permits the neck to be moved-vertically over.the mouth of the taper arm for a limited distance without in any wayrestricting the free passage of the sound from the sound-box to thetaper arm, and thereby provides for'the vertical movements of thesound-box due to mechanical pin 5, passing horizontallyand'diametricplane, so that the sound-borstyle 15 may be 4 tion of'thetaper arm. The, end face. 4 of this head is curvedoutwardly on an arcthe 5 The taper arm 1 carries a'soun -box uadrantal neck (and. sound-boxcarried inaccuracies found in all recordsta'hlets and sound-reproducingmachines, and also provides for the use of record-tablets of variousthickness. I

In order to limit the downward movement of the neck and sound-box, astop-pin 16 may be providedon the head 3 below and in the path of one ofthe yoke-arms 12.

In order to protect the taper arm from beto ing marred by the contact ofthe edge of the end of the neck 8, the said edge is slightly indented,as indicated at 17, Fig. 2.

Accuracy of it between the two faces 4 and 11 is not essential, sincethey may even is be separated sli htly without interfering ap preciablywith t e transmission of the sound from the neck to the taper arm, andof course these two 'faces may be curved laterally as well asvertically. I

2;: Instead of using my invention in connection with a sound ampli inghorn of the taper arm type a strai ht ornnt ay be used, in which case itwill 0 mounted to move across the record-tablet only in a plane parallelthereto.

Having described my invention, what I claim is 1. In a sound reproducingmachine, the

combination with a tapering sound-amplifier 3o constrained tomove over arecord-tabletin a plane arallel thereto and terminating at its smal erend in a. mouth in line with the bore of said amplifier, of a sound-boxsupport carried by said'amplifier and movable across 3 5 the said mouththereof into and out of com munication therewith, substantially asdescribed.

2.111 a sound-reproducing,machine,, the combination with a taperingsound-am plifier 4o constrained to move over a record-tablet in a planeparallel thereto and terminating at its smaller end in a mouth in linewith the bore of said amplifier, of a quadrantal neck, for an porting asound-box, carried by said I ampli er and movable across the said mouthceases into and out of communication therewith, substantially asdescribed.

3. In a sound-reproducing machine the combination with a sound-amplifierhaving a flaring mouth at its smaller end, and a soundbox carriermovable across said flaring mouth in one plane only and having asound-conveying passa e through it of less area than that of the aringmouth, substantially as described.

4. In a sound-reproducing machine, the combination with asound-amplifier, of a sound-box carrier pivoted to the sound-amplifierand movable across the same in a curved path, the meeting faces of thecarrier 6 and amplifier being curved on an arc'described about the axisof the carrier, substantially as described.

5. In a sound-reproducing machine, the combination with a soundamplifier formed with a curved end face, a sound-box carrier having acorrespondingly-curved face, and yoke-arms fast to the sound-box carrierand pivotally connected to the amplifier, whereby 'the sound-box carrieris constrained to move in a curved path over the end face of theamplifier, substantially as described.

6. In a sound-reproducing machine the combination with ataperingsound-amplifier movable one plane only over a sound-rec- 7.5 0rd, andhaving its-smaller end formed with a curved face and flaring mouth, of asoundbox carrier com'posedof a hollow, uadmntal neck having a curvedface movab e over the curved face of the amplifier cont' one thereto,and yoke arms fast on the nec and pivotally connected to the amplifier,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses. v

JOSEPH SANDERS. Witnesses:

ABRAHAM KAUFMAN, HELEN FRANZ.

